What parts on the suspension causes the +5 mm over regular integra/civic suspension? I know the front is cause by the hub. But how about the rear? Is it the trailing arm, spindles, or the hub also like the front?

 

the rear hubs do the same as well, thats why 4 x 100 rear hubs will not bolt up. The 4 lug type-r set up uses the same principal.
IM message any part # you can read off the bearings the 36mm type r hubs are bolted into.